Question

2x+25%x=-2,25

vay x bang bao nhieu

Answer 1

\(2x+25\%x=-2,25\)

\(\Leftrightarrow2x+\frac{25}{100}x=-\frac{225}{100}\)

\(\Leftrightarrow2x+\frac{1}{4}x=-\frac{9}{4}\)

\(\Leftrightarrow x\left(2+\frac{1}{4}\right)=-\frac{9}{4}\)

\(\Leftrightarrow\frac{9}{4}x=-\frac{9}{4}\)

\(\Leftrightarrow x=-\frac{9}{4}\div\frac{9}{4}\)

\(\Leftrightarrow x=-1\)

Answer 2

\(2x+25\%x=-2,25\)

\(2x+0,25x=-2,25\)

\(x.\left(2+0,25\right)=-2,25\)

\(x.2,25=-2,25\)

\(x=-2,25:2,25\)

\(x=-1\)

~Học tốt~